Model 102

At Jeff Rowland Design Group, truly great audio has been reduced to this: The astonishingly powerful and incredibly efficient Model 102 stereo amplifier, definitive proof that good things can come in small sizes. Utilizing the same ICEpower™ patented power conversion technology that has revolutionized modern amplifier design, the Model 102 packs a true 100 watt wallop in a tiny 3x13x7 inch machined solid aluminum housing virtually immune to resonance. The newest member of the JRDG family of fine audio components, the 102 is the product of an obsessive quest to perform one of modern electronics' most difficult balancing acts - the creation of clean, dynamic power without the unwanted and, now unwarranted, byproducts of excessive heat and mass. The Model 102 achieves this goal by the innovative application of impressive new developments in power supply and power output stage design. This 10-pound marvel features a balanced input/output topology combined with true 
dual-mono power supplies to deliver handsomely on the promise inherent in its elegant appearance. Pound for pound, the Model 102 is simply an amplifier without peer, producing an entrancing and satisfying musical experience far out of proportion to its dimensions... and at a price that redefines value. The JRDG Model 102, size one up and discover the true state of audio excellence, from the Jeff Rowland Design Group.

Output Power:
Continuous RMS
@ 8 ohms
@ 4 ohms

Non-inverting, Pin 2 Positive

1 x Balanced XLR
(Unbalanced operation requires an optional XLR to RCA adapter)

CCIF Intermodulation Distortion, 14/15kHz:

• Idle - 10 watts
• Maximum - 500 watts

27 dB

Model 112 Stereo Amplifier

The recent development of digital sources capable of greatly enhanced playback resolution brings a wealth of design challenges to the world of high end audio. To meet these demands, innovative solutions to the inherent limitations of current amplifier design had to be developed to fulfill the promise of today's new digital formats. Introducing the Jeff Rowland Design Group Model 112, a digital-age amplifier more than equal to the demands of audio's new millennium.

Featuring a unique two-tiered chassis design in which the power supply is separated from the amplifier circuitry, the Model 112's internal design effectively isolates sensitive signal circuitry from unwanted electromagnetic field contamination. A powerful toroidal power transformer gives the Model 112 the ability to handle even the most difficult loudspeaker loads with ease.

The Model 112 utilizes a machined solid aluminum billet chassis that serves not only as an elegant testament to Jeff Rowland Design Group's well-earned reputation for superior artistic design, but offers a completely non-resonant and RF/EMI shielded platform from with the musical presentation can begin. The amplifier provides a full complement of balanced and single-ended inputs, a unique "wheel lock" binding post for secure loudspeaker cable connection and an on/off DC input jack for home theater applications.

Internally, the Model 112 uses an ultra-fast, integrated circuit input/output topology that couples unquestioned reliability with unparalleled sonic performance. Modern "small geometry" surface mount technology provides the shortest possible signal path to attain unrivaled transparency. A low-impedance "balanced buss" power distribution system delivers clean, accurate DC power directly to critical circuit components. The end result is an amplifier with astonishing dynamics that far exceed its power rating.

Time to open the door to a new musical reality. The Jeff Rowland Design Group Model 112 - a beautiful realization of 21st Century audio

Output Power:
Continuous RMS
@ 8 ohms
@ 4 ohms

• User Selectable,
• 2 x Balanced XLR
• 2 x Unbalanced RCA

500 VA toroidal transformer with 100,000 MFD total storage capacitance.

• Idle - 75 watts
• Maximum - 700 watts

17.5” x 11.7” x 5.2”

Model 201 Mono Amplifier

An extraordinary journey into the undiscovered country of audio excellence, the Model 201 announces a new order in amplifier design. This amazing amplifier offers an unprecedented alliance between power and efficiency in a small yet elegantly engineered package. Don’t be fooled by its surprisingly compact size - the Model 201 Mono Amplifier from Jeff Rowland Design Group is an amplifier capable of prodigious displays of power and performance. Featuring state-of-the-art power conversion, the Model 201 brings a quiet revolution to music and film score and marks the first true expression of amplifier technology free of the limitations of traditional amplifier design.

The Model 201 offers an innovative solution to one of the most stubborn conflicts in audio design: to build an amplifier with the power and presence to recreate all of the subtlety of the world’s great recordings without the troubling by-products of conventional design such as excessive power consumption, massive size, questionable reliability and objectionable heat. With its patented ICEPOWER® power conversion technology, the Model 201 solves each of these dilemmas. The Model 201 combines incredible power and composure with a cool, quiet efficiency never before realized in the art of amplification.

Ideally sized, light-weight, and perfect for multi-channel use, the Model 201 offers maximum system flexibility for use in audio-video applications. A striking solid billet aluminum chassis provides the Model 201 a stable, non-resonant platform that is completely EMI and RF shielded. Balanced inputs and custom wheel lock binding posts complete an exterior that practices what the Model 201 preaches: no compromise in appearance or performance.

Output Power:
Continuous RMS
@ 8 ohms
@ 4 ohms

> 90dB, 20 Hz 20 kHz
Peak Output Current
> 35 amps

1 x Balanced XLR
(Unbalanced operation requires an optional XLR to RCA adapter)

• Idle - 9 watts
• Maximum - 650 watts

<.002%

1000

2.6" x 8.4" x 11.5"

Because Jeff Rowland Design Group is constantly analyzing new design improvements, we reserve the right to change or modify product specifications without notice or obligation.

Effortless. An amplifier's ability to drive a loudspeaker and accurately portray a musical composition's dynamic crescendos in lifelike manner rests in its capacity to provide instant and effortless power upon demand. Utilizing ICEPOWER™ power conversion technology to produce over 500 watts into 8 ohms and 1000 watts into 4, the Model 501 easily satisfies this criterion. Born from the same knowledge and experience that inspired the critically-acclaimed 300 Series, the Model 501 raises the bar to new heights in its achievement of sonic excellence in a small, efficient, low-cost package.

Exploding myths. Jeff Rowland Design Group has convincingly and consistently proven that careful and enlightened execution of design can overcome and reverse notions once thought of as audio heresy, i.e., line-level transformers, fully-balanced inputs and outputs, switching power supplies, and the list goes on. The 501 dispels the myth that only low-power amplifiers can faithfully honor the original source.

Satisfying demands. The finest modern loudspeaker designs, from diminutive studio monitors and massive multi-driver arrays to large, full-range electrostatics, require an unwavering source of amplifier power to convey music naturally and realistically. The great majority of loudspeakers present complex and difficult loads that must be driven in a linear manner. The Model 501 satisfies this demand while maintaining the precision of a lower powered amplifier.

Flexibility . Multiple Model 501s are as capable of powering a custom multi-channel home theater system as two units driving a full-range stereo loudspeaker system. Its diminutive size and low operating temperature allow for flexible placement in any listening environment.

Output Power:
Continuous RMS
@ 8 ohms
@ 4 ohms

> 90dB, 20 Hz 20 kHz
Peak Output Current
> 45 amps

1 x Balanced XLR
(Unbalanced operation requires an optional XLR to RCA adapter)

CCIF Intermodulation Distortion, 19/20kHz:

• Idle - 15 watts
• Maximum - 1300 watts

1000

Selectable Internal Jumper, 26 or 32 dB

2.85" x 8.4" x 13.0"

Because Jeff Rowland Design Group is constantly analyzing new design improvements, we reserve the right to change or modify product specifications without notice or obligation.

Model 301 Limited

Output Power:
@ 8 ohms
@ 4 ohms

CCIF Intermodulation Distortion, 19/20kHz:

Model 312 (stereo)

Output Power:
@ 8 ohms
@ 4 ohms

CCIF Intermodulation Distortion, 19/20kHz: